Method _items

/**
 * Function to read the files/folders in a folder.
 *
 * @param   string   $path                 The path of the folder to read.
 * @param   string   $filter               A filter for file names.
 * @param   mixed    $recurse              True to recursively search into sub-folders, or an integer to specify the maximum depth.
 * @param   boolean  $full                 True to return the full path to the file.
 * @param   array    $exclude              Array with names of files which should not be shown in the result.
 * @param   string   $excludeFilterString  Regexp of files to exclude
 * @param   boolean  $findFiles            True to read the files, false to read the folders
 *
 * @return  array  Files.
 *
 * @since   1.7.0
 */
protected static function _items($path, $filter, $recurse, $full, $exclude, $excludeFilterString, $findFiles)
{
    @set_time_limit(ini_get('max_execution_time'));
    $arr = array();
    // Read the source directory
    if (!($handle = @opendir($path))) {
        return $arr;
    }
    while (($file = readdir($handle)) !== false) {
        if ($file != '.' && $file != '..' && !\in_array($file, $exclude) && (empty($excludeFilterString) || !preg_match($excludeFilterString, $file))) {
            // Compute the fullpath
            $fullpath = $path . '/' . $file;
            // Compute the isDir flag
            $isDir = is_dir($fullpath);
            if (($isDir xor $findFiles) && preg_match("/{$filter}/", $file)) {
                // (fullpath is dir and folders are searched or fullpath is not dir and files are searched) and file matches the filter
                if ($full) {
                    // Full path is requested
                    $arr[] = $fullpath;
                } else {
                    // Filename is requested
                    $arr[] = $file;
                }
            }
            if ($isDir && $recurse) {
                // Search recursively
                if (\is_int($recurse)) {
                    // Until depth 0 is reached
                    $arr = array_merge($arr, self::_items($fullpath, $filter, $recurse - 1, $full, $exclude, $excludeFilterString, $findFiles));
                } else {
                    $arr = array_merge($arr, self::_items($fullpath, $filter, $recurse, $full, $exclude, $excludeFilterString, $findFiles));
                }
            }
        }
    }
    closedir($handle);
    return $arr;
}